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Fix potential uint64_t overflow in parity tail ceil division in locate

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This commit is contained in:
Andrea Mazzoleni 2026-08-26 21:52:42 +02:00
parent 31661e13bd
commit 0410fbc399
1 changed files with 2 additions and 2 deletions
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4
cmdline/locate.c
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@ -104,14 +104,14 @@ static void collect_parity_block_file(uint32_t block_size, struct snapraid_disk*
tommy_list_insert_tail(file_list, &entry->node, entry);
}
void state_locate_info(struct snapraid_state* state, uint64_t parity_tail, struct snapraid_locate_info* info)
static void state_locate_info(struct snapraid_state* state, uint64_t parity_tail, struct snapraid_locate_info* info)
{
uint32_t block_size = state->block_size;
info->block_max = parity_allocated_size(state);
info->parity_size = info->block_max * (uint64_t)block_size;
info->tail_block = (parity_tail + block_size - 1) / block_size;
info->tail_block = (parity_tail / block_size) + (parity_tail % block_size != 0);
if (info->tail_block > info->block_max)
info->low_to_free_tail_block = 0;